Atmospheric Sciences’ faculty secure private funding to probe secrets of thunderstorms near the equator When the Northrop Grumman Corp. wanted to figure out how tropical thunderstorms would impact unmanned aircraft systems (UAS) flights, they turned to experts at the University of North Dakota. Northrop Grumman is one of the world\u27s largest aerospace companies and the maker of several prominent UAS, including the Global Hawk system now deployed at the Grand Forks Air Force Base. We started talking with Northrop Grumman awhile back about defining the hazards of tropical thunderstorms to UAS, said Gretchen Mullendore, a faculty member and thunderstorm expert in the UND Department of Atmospheric Sciences, part of the John D. Odegard Schoo...